There are 156 beads in a basket. 0.5 of them are white beads, and the rest are grey and purple beads. If there are 15 as many grey beads as purple beads. How many purple beads are there?
| White beads |
Grey beads |
Purple beads |
Total |
| 1 u |
1 u |
2 u |
| |
1 p |
5 p |
|
0.5 =
510 =
12 Fraction of beads that are grey and purple beads
= 1 -
12 =
12 Total number of beads = 2 u
2 u = 156
1 u = 156 ÷ 2 = 78
Number of grey beads and purple beads
= 1 u
= 1 x 78
= 78
Number of grey and purple beads
= 1 p + 5 p
= 6 p
6 p = 78
1 p = 78 ÷ 6 = 13
Number of purple beads
= 5 p
= 5 x 13
= 65
Answer(s): 65
